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DAMPBB, PoR sToVB AND O THBRIPIPBS.

No. 322,346. Patented July 14, 1885'.

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UNITED STATES PATENT OEFICEO v MARK S. BURROUGH, OF MERCHANTVILLE, NEW JERSEY.

DAMPER FOR STOVE AND OTHER PIPES.

SPEGIFICATIN forming part of Letters Patent No. 322,346, dated July 14, 1885.

Application mea october 20,1584.

following is a specication, reference being` had therein to the accompanying drawings, wherein- Figure l is a vertical transverse section of a series of dampers embodyingmy improvements. Fig. 2 is an elevation of same. Fig. 3 is a vertical cross-section of a damper having two series of radial ilues and a rotating valve or disk for each series of such dues. Fig. 4 is a plan of same, and Fi-g. 5 is a sectional view of a modified form of damper frame or casing for a small-bore pipe or flue.

My invention has relation to that form of damper whichris constructed and arranged to provide a tortuous channel for the passage of hot air or gases escaping to a liue or chimney7 in order that the caloric of such air or gases may be utilized for heating purposes and effect an economy in the amount of fuel required therefor; and it has for its object to so construct the damper that it not only affords a tortuous channel for the passage of the hot air or gases, vbut also, whenever required, a large central or direct channel for obtaining the necessary draft for starting and maintaining the fire in the heating device.

My invention accordingly 'consists 'of the combination, construction, and arrangement of parts comprising a damper, as hereinafter described and claimed, having reference particularly to a damper composed of a disk having a central aperture bounded by a vertical annular flange in which are radial openings or fines, and a rotating disk or valve placed in said central aperture beyond the plane of said openings.

In the drawings, A represents a stove pipe or flue fora heating or other device, and B a damper therefor, which is composed of a frame or disk, D, having a large central aperture, d, which is bounded by a vertically-arranged annular fiange, d', having radial openings or ines d2 leading to near the outer edge of disk D, as shown.

In the aperture d, beyond the plane of the (No model.)

whereby said valve and shaft move together,

and the latter has end bearings, f', in the recessesfz formed in the upper edge of vertical ange d. The valve-E opens or closes the central aperture, d, accordingly as the former is either in a vertical or horizontal position. When moved to open said aperture, or when in a vertical position, a central large opening or passage-way through the damper is provided for the escape of smoke or the waste products oi'eombustion, and the necessary draft for starting and keeping up the fire in aheating device is then afforded. When, however, said valve is moved to close the aperture d, or when in a horizontal position, the passage way through the damper is a tortuous one, and is by way of the central aperture, d, and thence through the iues or openings d2, as indicated by the arrows in Fig. 1. The hot gases or air then escaping into the flue A are by the damper directed against and heat said iiue, which heat is radiated off into the room wherein the iue is located.

By employing asuccessive number of dampers the hot air ascending through the dampers in the flue A is repeatedly directed against the sides of the fines at different elevations of the same to more effectnally utilize the caloric of such air for heating purposes. When a successive number of dampers are used, the valve E of each damper is provided with lugs e', to which are hinged pivoted links or connecting-bars G, for securing the valves of the` dampers together, so that they may be all simultaneously turned or operated; and the dampers are Asecured together at suitable intervals apart by the bars C C, which have bent ends c screwedto the frames D of the end dampers and siderecesses, c c,which enf ter notches bin the frames of the middle or intervening dampers. to hold them in place, as more plainly shown in Fig. 2.

By such last-described construction all the dam pers are rmlysecured together, and their valves E are simultaneously moved to effect an openingand closing of the central apertures of the dampers.

In the last-described construction but,l one turning handle or button h is employed, which may be either secured to the shaft of the disk or valve of the top damper of the series, as shown in Fig. l, or to any other one of the series, as desired. To increase the efflciency of my improved damper, it may, if desired, be duplicated by providing radial flues or openings in the flange d above and below the disk D and two rotating valves in aperture d, one at each end thereof, as shown in Fig. 3, which valves are linked together as above described. In this case the hot-air passage through vthe damper is made more tortu ous, and such air impinges twice against the walls of the ilues in itspassage into and exit from the damper, as indicated by the arrows in said gure.

In small-sizedampers, or those required for smallbore pipes, the Huesradiating from the vertical flange d. are dispensed with, leaving only the openings in the latter, as shown in Fig. 5.

The damper-frame and cut-off may be made of cast or sheet metal, or otherwise, as desired or deemedl advisable.

I do notlimit myself to any particular number of dampers for a series, nor to the manner ol connecting them together, nor to the number and arrangement of the radial flues or openings in or leading` from the vertical flanges of the damper-frames, nor to the mauner of linking or coupling the cut-off valves of each damper, as it is obvious that said parts may be variously arranged, provided for, or constructed, as desired.

I am aware that heating-drums or other pipes having frustoconical plates variously arranged, and provided with rotary valves or cut-offs to furnish, as desired, either a tortuous passage for the hot air or gases or a cen tral straight passage for the smoke, are old, and I accordingly disclaim the same and kindred constructions.

Vhat I claim isl. A damper composed of a disk or plate having a central aperture bounded by a Vertical annular flange from which radiates a series of openings or lues, and a rotary valve or cut-off placed in said flanged aperture and located beyond the plane of said flues or openings, substantially as shown and described.

2. The combination of a series of dampers, B, having central flanged openings or vertical ilues, d', radial ilues d2, 4rotary valves E, located in flues d beyond the plane of ilues d2, and link-connections for said valves, substantially as and for the purpose set forth.

3. The damper B, composed of a plate or disk, D, having central flanged opening or flue, d', radial openings or ilues above and below plate D, and communicating with ilue d, and a rotating valve at each end of the latter, substantially as shown and described.

4. A damper composed of disk D, having central aperture, d, and ilanges d', radial.

openings d2 in said auges, and double valves E, linked together, and arranged for operation substantially as shown and described.

5. In combination with dampers B, the supporting-rods C, having bent ends c, and notches e', substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MARK S. BURROUGH.

Wit n esses:

S. J. VAN STAvoRnN, (li-Lis. F. VAN HORN. 

